Roller-bearing.



No.- 848,642. l PATEN'I'ED APR. Z, 1907.

ROLLER BEARING. APPLIUATION FILED JUNE 22, 1903.

1u: Nouns-firmas ca., wasmnaron, n. c.

IINITFI STTI PATENT FFICE.

RUBY G. RASTMAN, OP MARION, INDIANA,l AissIeNoR To BENJAMIN P; BURK AND PHILIP MATTER, cOPARTNBRs As FIRM or NATIONAL SWBBPBR COMPANY, orl MARION, INDIANA.

ROLLER-BEARING.

Specification of Letters Patent.

)Patented April 2, 1907.

Application filed June 22,1903. Serial No. 162,479.

To (t/f 'LU/1,0771, 71T? 717,04/ colto/:rre:

Be it known that I, RUBY G. EAsTMAN, a citizen Aof the United States, residing at Marion, in the county of Grant and State of Indiana, have invented a certain new and useful Improvement in Roller-Bearings, of which. the following is a specification.

My .invention relates 'to roller-bearings, particularly such as are adapted for use in connection with carpet-sweepers and carpetsweepers equipped with such roller-bearings.

My invention is illustrated in one of its forms and some of its applications in the accompanying drawings, wherein Figure l is a plan view, with parts in section, of portions of the carpet-sweeper with my invention applied thereto. Fig. 2 is an enlarged cross-seotion of a carpet-sweeper wheel with my invention applied. 3 is a side elevation of same with the cap of the cup'removed. Fig. 4 is a detail cross-section of the cup, taken near the retaining device. Fig. 5 is a cross-section through a roller and its retainer.

Like parts are indicated by the same letter in all figures.

Ais a sweeper-brush; B, an axle; C, a springband which encircles the support. This band carries at the point D an inwardly-projecting short shaft, which is received into an aperture in the e'nd of the brush, and on this the brush rotates. This band also bears against the hub of the sweeper-wheel E or against some projecting part associated with the hub. It is preferably of spring material, so that the parts can be sprung into position. In both the wheel and sweeper-brush I insert my roller-bearing' device, which is shown more in detail in Figs. 2, 3, and 4.

E is the wheel, having a central aperture into which lits the cup E', preferably of thin spun metal. In this cup lie the rollers, which are preferably arranged about a central retainer E2, which has the central aperture E3 to receive the end of the shaft or axle and has cut-away places or notches, as at E", to receive the rollers E5. The retainer is of smaller diameter than the cup, and the notches E4 are of less depth than the diameter of the rollers, so that the rollers project in .l both directions beyond the retainer. When I i l I the retainer and its associated rollers are inserted in the cup, they are thereby held together. The rollers are spaced and bear upon the inside of the cup and the outside of the rollers, for the central aperture E3 is of such size that the axle bears upon the rollers.

The rollers are provided each with a central annular groove into which the retainer iits.

F is a cap or lid, which iits closely onto the cup and is perforated to admit the shaft B. This shaft B may be of such length as to bear against the bottom of the cup or pass through or be free from the bottom. When the device is applied, as indicated, in the carpetsweeper, it may be desirable to insert a iibrous washer J to keep the dust from entering the bearing through the aperture provided for theadmission of the shaft.

What I have shown is simply for the purpose of illustrating my invention and is of courseV not to be taken as the sole means by which it can be carried out. I do not wish to be limited to the particular form, arrangement, location, and size of these several parts shown.

Use and operation of my invention are as follows: The hub of the wheel is either tooled out or it may be properly proportioned and finished in the casting. The cup, preferably of spun material, is uncapped, and the rollers are placed looselyT in position in the notches of the retainer. The group of rollers with their retainer are then put in position in the cup and the cap is forced down on the cup. Thus a complete finished thin metal cup-bearing is provided with a shaft-aperture at one end. The cup is then forced into the aperture in the cup of the wheel, or if it is applied to the brush, then in the end of the brush. This wheel or brush is now ready to be applied to the shaft or axle, as may be desired. The shaft may project through the other end of the cup, if necessary.

I claim` A self-contained roller-bearing for carpetsweepers and the like, comprising` a cylindrical thin metal cupha centrally-perforated cover therefor, a series of rollers therein each of approximately the same length as the cup IOC and adapted to bear against its ends when a vfleXhly-mounted shaft adapted to extend 1n posltlon, cMld provlded Wlth an annular through the central perforatlon of the cover groove nndway of rts length, a retznner to and 1n engagement Wlth the rollers.

keep the rollers dstribntedehout the inner RUBY G EASTMAN surface of the cup,A said retainer being n the Witnesses: form of a disk and with a central aperture CHARLEs F. BLEND7 and open notches on one of its edges, and VALTER D. HODSON. 

